Team slides and slide masters why all the duplicates

Hi ShawnAbsolam!

I understand importing multiple slides that share the same Slide Master layout is causing duplication in Storyline!

If you've confirmed that you are working locally, and a repair of your Storyline installation doesn't change the behavior, seeing a screen recording of the issue would be helpful. Do you mind sharing that here in the discussion or privately through a support case?

Looking forward to hearing from you!